Author Topic: My series of PIC based drivers (7135 and FET)  (Read 8255 times)

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Offline Cereal_Killer

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My series of PIC based drivers (7135 and FET)
« on: October 13, 2014, 01:28:13 AM »
I wanted to post these here, not much interest on BLF :( ...
I'll be doing several other sizes but for now is a pair of 17mm options, one DD one linear regulated. I've switched over to the smaller 6-pin 10F322, this MCU allows all the functions of "The Ultimate Flashlight Code" for momentary use (with the code written in C, not assembly) AND another very simple to use (but very versatile) clicky switch UI (also written in C) that is equally as suited for a tiny pocket EDC as it is a huge mega output light. Oh also, the 10F322's cost just $.50 each!

I'm gonna be making new video demo's of both UI's soon (not today) so I'll post that up later.

For how here's the hardware:
First up is my 10*7135 17mm driver
(note there is no Sw+ pad, solder straight to MCU pin 6)
A little tricky to build with the 7135 spacing
Any number of 7135's can be used (not like some drivers where specific 7135's must be populated for other components to make connections threw)
Zener pad on bottom is left unpopulated for single cell builds.


next is the 17mm FET driver
Very simple to build
Has a dedicated SW+ input via sized for 26AWG wire
Allows for programming while still installed in light!
Same situation with the Zener diode


I'll be making up a 15, 15.17 and 20mm versions of these in the next few weeks (unless anyone else wants to help). Hint hint, I can provide the .sch to anyone interested. For the 15 and the 15.17 I will be using a SOT-23-3 package "baby FET" which can deliver up to about 5.5A for lower power builds (not that 5.5A is low power, but for single emitter lights and stuff).

Next driver I post up will be a 10m SINGLE SIDED FET driver!

« Last Edit: October 13, 2014, 01:31:13 AM by Cereal_Killer »
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Offline MRsDNF

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Re: My series of PIC based drivers (7135 and FET)
« Reply #1 on: October 13, 2014, 05:30:00 AM »
Thanks CK. Unfortunately my abilities do not come close to making these.
When the big picture is to big, look for a point you can start at and build from there.

Offline pommie

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Re: My series of PIC based drivers (7135 and FET)
« Reply #2 on: October 13, 2014, 07:41:57 AM »
Thanks Ck, 10x 7135's on the board is a lot better than stacking 2x, I have a few lights that would appreciate these boards.
Again thanks for all the hard work

Cheers David

Offline ErvinGattis

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Re: My series of PIC based drivers (7135 and FET)
« Reply #3 on: October 15, 2015, 08:17:20 PM »
Thanks for sharing this much helpful information here.
It will be helpful in my future projects. I want to know more something about it.
Can you please tell me its voltage current required specifications?
Also its most functional area based on the applications?